Site administrators
From MoodleDocs
Location: Site administration > Users > Permissions > Site administrators
In Moodle 2.0 onwards, users may be assigned the role of site administrator, but the role itself cannot be edited (or deleted!).
Note: You are currently viewing documentation for Moodle 3.6. Up-to-date documentation for the latest stable version of Moodle is likely available here: Site administrators.
Location: Site administration > Users > Permissions > Site administrators
In Moodle 2.0 onwards, users may be assigned the role of site administrator, but the role itself cannot be edited (or deleted!).